RST Scope vs Husker Scope
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RST Scope
This utility app provides spectrum scope and waterfall displays for amateur radio operators. It enhances radios lacking these features by analyzing microphone input, allowing for clear distinction of Morse code and detailed audio frequency visualization.
- Spectrum scope and waterfall display
- Morse code distinction via FFT
- Adjustable waterfall speed
- Adjustable audio input level
- Switchable display band (wide/narrow)
- Display pause function
- Recording and playback of input sound
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This is an app for amateur radio operators with a narrow band of audio frequency, spectrum scope & waterfall display. You can get a rich display by microphone inputting the speaker output of a radio that does not have a spectrum scope or waterfall function. The FFT allows you to distinguish between the dot and dash of Morse code. [function] 1. Ability to change the speed of the waterfall 2. Ability to adjust the level of audio input 3. Function to switch the display band between wide and narrow 4. Display pause function (pause / cancel by touching the screen) 5. Function to switch the cross hatch ON / OFF by longTap 6. Frequency resolution is fixed at 40Hz. 7. Function to switch the USB/LSB by Left/Right Swipe 8.Recording/Playback function of Input Sound RST Scope(Free) https://www.youtube.com/watch?v=1s9RvOFp52g
Husker Scope
This utility app functions as a multi-channel signal generator and analyzer. It supports audio range signals through device speakers and can process higher frequencies with a custom hardware board. The app offers oscilloscope, spectrum analyzer, and logic analyzer capabilities.
- Dual Channel Function Generator
- DC AM/FM Modulator
- DC Oscilloscope
- DC Spectrum Analyzer
- 8-channel Logic Analyzer
- Audio output via speakers/jack
- Custom hardware board support
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Husker Scope provides an all-in-one cross platform application that implements a Dual Channel (DC) Function Generator, DC AM/FM Modulator, DC Oscilloscope, DC Spectrum Analyzer, and an 8-channel Logic Analyzer. This app outputs audio range (20Hz to 20kHz) signals via the speakers / 3.5mm audio jack left & right channels and inputs signals either through the microphone audio jack (for audio input ranges) or through a custom hardware board (that can handle up to 500kHz signals). The hardware board can connect through serial on a PC or through Bluetooth on a mobile device. For more information and to view the custom hardware board, visit: https://www.huskerscope.com
Screenshots
Verdict
The clearest difference is ads: Husker Scope at none against RST Scope's shown. Husker Scope also leads on monetization model (free vs ad-supported) and ratings volume (9 vs 1). RST Scope's advantage is rating (5.0 vs 4.6) and update cadence (every 3 days vs every 9 months). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
RST Scope holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Husker Scope has 9 ratings behind it against 1, so its average is the more settled of the two.
RST Scope ships an update every 3 days, Husker Scope every 9 months. Both last shipped on November 3, 2026.
| Parameter | RST Scope | Husker Scope |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.6 (9 ratings) |
| Positive reviews | — | 75.0% of reviews |
| Number of ratings | 1 | 9 — better |
| Update frequency | Every 3 days — better | Every 9 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | koji kamogawa | University of Nebraska - Lincoln |
Customer experience
RST Scope
Husker Scope
In-app purchases
RST Scope
No in-app purchases
Husker Scope
No in-app purchases
